The Signal-Stat Electro-Mechanical 2-Terminal Flasher 12V 172-3 by Truck-Lite operates in a temperature range -25 degrees F to + 145 degrees F. FEATURES AND SPECIFICATIONS:Part No.: 172-3Material: Plastic housing12v flasher operates at 11v to 15vOperates in a temperature range -25 degrees F to + 145 degrees FMeets FMVSS 108 and SAE J590 & J945Flashes at a rate of 70 to 120 fpm, with first flash less than 1.3 seconds after startupFunctions at 13v for 36 continuous hours with 12-32 CP lamps, 25 amps Note: This product is a bulk product and has no manufacturers box or instructions. This listing is for a bulk pack of 100. The price shown is per unit.